Great app but needs to be updated
This is a great app. A real lab utility app that is currently the only one of its kind. But its last update was 3 yrs ago and it’s buggy especially on the new OSes - it crashes at times. I’ve had to delete and reinstall twice. Please update the app so it runs smoothly again. Thank you!
Used this app everyday for years
I can’t say enough good about this app. Fantastic for quickly preparing buffers and dilutions. Saves tons of messy calculator work.
Awesome
This is a fantastic and very handy app for scientists. I highly recommended it!!
Comment to jeffspc88
As the developer I am sorry that you had such a bad experience. The problem with mole converter was caused by a wrong variable which was set when you did exit the program. The next time you did start the program kDa instead of Da was displayed (or vice versa). Therefore you get mmoles instead of moles. You can test it by yourself by shaking your device to clear all fields. When you now enter the values the correct solution will be displayed. I have submitted an update (1.8.1) to fix this problem. The update will also address the slider issue. In cases when the value was zero it was not possible to change the unit.
However thank you for your valuable feedback and I hope you give the program a second chance.
However thank you for your valuable feedback and I hope you give the program a second chance.
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Pro must mean 'Pro'totype
Buggy sliders, erroneous calculations, and only slightly useful:
The mole converter tells me that 2g of a 1Dalton compound = 2 mmoles (should be 2 moles)
Most of the sliders that let you switch units don't allow you to select anything besides yM/yL or M/L. The slider just snaps between those two extremes and you can't select anything in between.
The pH solution calculator probably works, but I wouldn't know because it's so difficult to figure out. I had to read the help document at the iSheepSoft site, and now I just wonder, Why would anyone need this? Maybe if you do a lot of novel buffer prep.
Several calculations allow you to solve for a particular variable (ie, G, radius, RPM). It took me a few tries to verify that the button I was pushing should've been labled "Solve for:" G, radius, RPM. This is unclear at the beginning.
The PPM converter doesn't help if you do volume/volume dilutions, only mass/mass is supported (though it has a nifty density correction feature!, so maybe you're supposed to back-calculate vol. from mass-density?)
The molarity calculator appears to work, but it's not the most user friendly implementation, and for this I can use iPhone's calculator (as I'm a professional chemist).
So it's only useful for centrifugation calculations and molarity, but I don't trust it now that I've seen it screw up a simple mole conversion.
Sigh. I'm useing an iPhone 3G. Is this not 3G compatible?
The mole converter tells me that 2g of a 1Dalton compound = 2 mmoles (should be 2 moles)
Most of the sliders that let you switch units don't allow you to select anything besides yM/yL or M/L. The slider just snaps between those two extremes and you can't select anything in between.
The pH solution calculator probably works, but I wouldn't know because it's so difficult to figure out. I had to read the help document at the iSheepSoft site, and now I just wonder, Why would anyone need this? Maybe if you do a lot of novel buffer prep.
Several calculations allow you to solve for a particular variable (ie, G, radius, RPM). It took me a few tries to verify that the button I was pushing should've been labled "Solve for:" G, radius, RPM. This is unclear at the beginning.
The PPM converter doesn't help if you do volume/volume dilutions, only mass/mass is supported (though it has a nifty density correction feature!, so maybe you're supposed to back-calculate vol. from mass-density?)
The molarity calculator appears to work, but it's not the most user friendly implementation, and for this I can use iPhone's calculator (as I'm a professional chemist).
So it's only useful for centrifugation calculations and molarity, but I don't trust it now that I've seen it screw up a simple mole conversion.
Sigh. I'm useing an iPhone 3G. Is this not 3G compatible?
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